swim bladder

1. 1.

   an air-filled sac near the spinal column in many fishes that helps maintain buoyancy

   Synonymsair bladderfloat

   Broadersac

Questions about swim bladder

What does swim bladder mean?

swim bladder means "an air-filled sac near the spinal column in many fishes that helps maintain buoyancy".

What is another word for swim bladder?

Close synonyms include air bladder, float. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is swim bladder a common word?

swim bladder is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.